Léon Bakst, born Leyb-Khaim Izrailevich Rosenberg (27 January (8 February) 1866  – 27 December 1924) was a Russian painter and scene and costume designer of Jewish origin. He was a member of the Sergei Diaghilev circle and the Ballets Russes, for which he designed exotic, richly coloured sets and costumes. He designed the décor for such productions as Carnaval (1910), Spectre de la rose (1911), Daphnis and Chloe (1912), The Sleeping Princess (1921) and others.